The Central Motor Vehicles Rules,1989
Section 115B. Mass emission standards for Compressed Natural Gas Driven Vehicles
1[Mass emission standards for Compressed Natural Gas Driven Vehicles.2[Mass emission standards for vehicles when operating on Compressed Natural Gas (hereinafter in this rule referred to as “CNG”) shall be the same as are applicable for gasoline vehicles with the exception that HC shall be replaced by Non-Methane Hydrocarbon (NMHC), where NMHC = 0.3 x HC]
A. Original Equipment/Converted Gasoline Vehicles:
(1) For gasoline vehicles with Original Equipment (hereinafter in this rule referred to as O.E.) fitment. 3[(a) In case of CNG fitments by vehicle manufacturers on new petrol vehicles, each model manufactured by vehicle manufacturers shall be type approved as per the prevailing mass emission norms as applicable for the category of new vehicles in respect of the place of its use;]
Explanations. In the case of O.E. or conversion of “In-Use” Gasoline Vehicles,
(a) For the purposes of granting Type Approval to a CNG kit, the tests shall be carried out as per the Table below by the test agencies.
TABLE
Test Reference Document(1) (2)
(i)
(ii)
Mass emission tests
Engine performance tests on engine
dynamometer applicable for OE
only Constant speed fuel
consumption test MOST/CMVR/TAP-115/116 and notifications issued by the
Government of India in this respect IS: 14599-1999
IS: 11921,1986 (for 4-wheelers)
IS: 10944,1983 (for mopeds)
IS: 10881,1984 (for motor cycles and scooters)
(b)The test procedure and safety guidelines for CNG vehicles, kit components including installation thereof, shall be as per A1S 024, as amended from time to time, till such time as corresponding BIS specifications are notified.
(c) For OE fitment and retrofitment on “in-use” vehicles, the responsibility to Type Approval shall be that of the vehicle manufacturer and kit manufacturer or supplier respectively.
(d) The Type Approval of CNG kit for “retrofitment” shall be valid for three years from the date of issue of such approval and shall be renewable for three years at a time.
(e) The retrofitment of CNG kits on in-use vehicles shall be carried out by workshops authorized by the kit manufacturer/supplier or vehicle manufacturers, as the case may
be.
(I) The test agency shall complete the test and give necessary certificate within a period of three months from the date of receiving the kits.
(g)The kit manufacturer/supplier shall provide a layout plan for retrofitment of CNG kit in the respective models on which any approved kit is to be installed, to the test agency for vetting and approval. The retrofitment of the kit shall be on the basis of such approved layout plan only. Testing agencies will be required to indicate specifically, the models and their variants on which the certificate will be valid.
4[* * *]
B. O.E. CNG Vehicles/Converted Diesel Vehicle:
(I) For O.E. CNG Dedicated Vehicle (including drive-away chassis) made by vehicle manufacturers. 5[(a) In case of CNG fitments by vehicle manufacturers on new diesel vehicles, each model manufactured by vehicle manufacturers shall be type approved as per the prevailing mass emission norms as applicable for the category of new vehicles in respect of the place of its use;]
(b) O.E. CNG engine approved for specific engine capacity can be installed on the base model and its variants complying with the requirements under these rules as applicable;
(c) Tests for particulate matter and emission of visible pollutants (smoke) under these rules shall not be applicable;
(d) Prevailing COP procedure will also be applicable.
(II) For conversion by modification of engines of In-use Diesel Vehicles. (A) Type approval for diesel vehicle retrofitted/modified for dedicated CNG operation shall be given for specific make and model of the vehicle, in view of major changes or modifications involved in the CNG kit and diesel engine depending upon make and model of the vehicle;
(b) CNG kit approved on the vehicle for specific engine capacity can be installed on the base model and its variants fitted with the same capacity engine;
6[(c) The in-use vehicles when converted to operate on CNG shall meet the type approval norms of diesel vehicles corresponding to the year of their manufacture subject to the following minimum norms:
(i) for the vehicles manufactured up to the 31st %day of March,2000, the type approval norms equivalent to India-2000 (India Stage I) norms as applicable under these rules;
(a) for the vehicles manufactured on and after the 1st day of April,2000, the type approval norms as specified in the Bharat Stage II norms, till the validity of such Bharat Stage II norms;
(iii) for the vehicles manufactured on and after the 1st day of April,2005, the type approval norms as applicable subject to minimum of Bharat Stage III emission norms in case of four-wheelers and Bharat Stage II emission norms for two and three-wheelers till the validity of these norms;]
(d) Vehicles offered for Type Approval to the testing agency referred in rule 126 of the Central Motor Vehicles Rules,1989 shall have to comply with fitness requirement, as applicable under these rules;
(e) Tests for particulate matter and emission of visible pollutants (smoke) under these rules shall not be applicable;
(f) Separate Type Approval is required for mechanically controlled and electronically controlled diesel fuel injected vehicles when retrofitted/ modified for CNG operation.
Explanations. In the case of O.E. or conversion of “In-Use” vehicles by modification
(a) for the purpose of granting Type Approval to the vehicle fitted with CNG engine (converted from diesel engine) as O.E., or conversion by modification of “In-Use” diesel vehicles, performance tests shall be carried out as per the Table given below by the test agencies, namely:
________________________________________________________
(1) (2)
________________________________________________________
(iv) Electro Magnetic
Interference (EMI) In accordance with notification issued under rule 124 of Central Motor
Vehicles Rules,1989 (v) Range test of at least 250 km for
buses (vi) Cooling Performance IS: 14557,1998 (vii) Constant speed fuel consumption IS: 11921,1986 (for 4-wheelers)
IS: 10944,1983 (for mopeds)
IS: 10881,1984 (for motor cycles and scooters)
________________________________________________________
Explanation.
(a) Vehicles offered for Type Approval to the testing agency referred in rule 126 shall have to comply with fitness requirement, as applicable under these rules.
(b)Test procedure and safety guidelines for such CNG vehicles, kit components including installation thereof shall be as per A1S 024, as amended from time to time, till such time as corresponding BIS specifications are notified.
(c) The test agency shall complete the test and give necessary certificate within three months of the same being submitted for tests.
(d) Testing agencies will be required to indicate specifically, the models and their variants on which the replacement of new engine will be valid.
D. Applicable Emission Norms
Category of Engines Applicable Emission Norms (i) Fitted in vehicles with CVW equal to or less
th
an 3.5 ton ” For gasoline vehicles converted to CNG, Prevailing gasoline engine
norms for chassis dynamometer test
” For diesel vehicles converted to CNG, prevailing diesel engine norms
for chassis dynamometer lest (ii’) Fitted in vehicles with CVW greater than
3.5 ton Prevailing diesel engine emission norms based on 13-mode steadystate
engine dynamometer test.
E. CNG vehicle/s kit components including installation shall comply the Safety Checks as given in Annexure IX.
F. Testing agencies shall issue every Type Approval certificate containing the “Safety and Procedural Requirements for Type Approval of CNG and LPC Operated Vehicles” for CNG vehicles and conversion kits, as mentioned in Annexure X.
Note:
1. For the purpose of these rules, “O.E. fitment” means the vehicles which are manufactured for CNG operation by the vehicle manufacturer prior to their first registration.
2. “Conversion of In-use Gasoline Vehicle” means a vehicle already registered as a gasoline vehicle and is subsequently converted for operation on CNG by fitting the conversion kit and carrying out the other necessary changes.
3. “O.E. CNG Dedicated Vehicles” means the vehicles which are manufactured for CNG operation by the vehicle manufacturer prior to their first registration.
4. “Converted diesel vehicle” means a vehicle already registered as a diesel vehicle and is subsequently converted for operation on CNG by modifying the diesel engine fitted on that vehicle by fitting the conversion kit and carrying out the other necessary changes.
5. ” Retro fitment” (or replacement) of diesel vehicle means a vehicle already registered as a diesel vehicle and is subsequently converted for operation on CNG fitting a new engine adapted to operate on CNG.
6. The AIS or IS specifications may be amended from time to time.
7[7. In case of conversion kits on in-use gasoline vehicles or converted diesel vehicles, the validity of the type approval certificate issued by the testing agencies shall cover vehicles manufactured between the year of manufacture of the vehicle, on which such kit has been tested and date of the validity of the applicable norms prescribed for such category of vehicles as per clause (a) of Item (II) of part A of rule 115-B. Testing agencies shall be required to indicate specifically the model and their variants for diesel vehicles and capacity range of gasoline vehicles on which the certificate shall be valid for conversion.]
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1. R. 115-B substituted by G.S.R. 853(E) dated 19-11-2001 (w.e.f. 19-5-2002).
2. Substituted by G.S.R. 111(E), dated 10-2-2004 (w.e.f. 10-8-2004).
3. CI. (a) substituted by G.S.R. 589(E),dated 16-9-2005 (w.e.f. 16-9-2006).
4. Item A, CI. (Ill) omitted by G.S.R. 111(E), dated 10-2-2004 (w.e.f. 10-8-2004).
5. CI. (a) substituted by G.S.R. 589(E), dated 16-9-2005 (w.e.f. 16-9-2006).
6. CI. (c) substituted byG.S.R 589(E),dated 16-9-2005(w.e.f. 16-9-2006).
7. Note 7 substituted by G.S.R. 589(E), dated 16-9-2005 (w.e.f. 16-9-2006).
