How much horsepower does a 4 cylinder VTEC have?
The Feature: The CR-V LX’s 2.4-liter 4-cylinder engine incorporates direct injection (DI). Thanks to DI and numerous other clever elements, this engine produces ample torque—180 lb-ft at 3900 rpm (SAE net). Peak horsepower is rated at 184, occurring at 6400 rpm (SAE net).
What’s the difference between VTEC and ULEV engine?
In addition to the electronic EGR control and lean combustion afforded by the VTEC swirl-combustion process, the ULEV engine uses precise air-fuel control made possible by a Linear Air-Fuel sensor, secondary oxygen sensor, high-performance catalyst and new 32-bit fuel-injection microprocessor.
What kind of exhaust system does the ULEV engine use?
The ULEV engine uses a rotary air-control valve that also controls the Air-Assist Injection system, in place of the electric air-control valve and fast-idle valve used in the previous Accord. The exhaust system solves the problem of passing combustion heat to the catalyst as soon as possible.
Why does the accord engine use ULEV fuel injection?
The ULEV engine PCM can also compensate for mixture inaccuracies caused by fuel-droplet adhesion to the intake port walls during cold start-up (a major reason for a high level of unburned hydrocarbons during the warm-up cycle). The ULEV fuel-injection system also utilizes the precise EGR control provided by the Accord engine’s electronic EGR valve.
What are the sensors on the ULEV engine?
In addition to the normal sensor inputs, such as throttle position, coolant temperature, air temperature, etc., the ULEV engine has two air-fuel ratio sensors: a linear air-fuel sensor in the exhaust manifold and a stoichiometric sensor between the front and rear beds of the underfloor catalytic converter.
In addition to the electronic EGR control and lean combustion afforded by the VTEC swirl-combustion process, the ULEV engine uses precise air-fuel control made possible by a Linear Air-Fuel sensor, secondary oxygen sensor, high-performance catalyst and new 32-bit fuel-injection microprocessor.
The ULEV engine uses a rotary air-control valve that also controls the Air-Assist Injection system, in place of the electric air-control valve and fast-idle valve used in the previous Accord. The exhaust system solves the problem of passing combustion heat to the catalyst as soon as possible.
In addition to the normal sensor inputs, such as throttle position, coolant temperature, air temperature, etc., the ULEV engine has two air-fuel ratio sensors: a linear air-fuel sensor in the exhaust manifold and a stoichiometric sensor between the front and rear beds of the underfloor catalytic converter.
The ULEV engine PCM can also compensate for mixture inaccuracies caused by fuel-droplet adhesion to the intake port walls during cold start-up (a major reason for a high level of unburned hydrocarbons during the warm-up cycle). The ULEV fuel-injection system also utilizes the precise EGR control provided by the Accord engine’s electronic EGR valve.